Corning Incorporated
MX ˙ BMV ˙ US2193501051
SecurityMX:GLW / Corning Incorporated
InstitutionArmstrong Henry H Associates Inc
Latest Disclosed Ownership4,450 shares
Latest Disclosed Value $ 605,067
Armstrong Henry H Associates Inc ownership in GLW / Corning Incorporated

On April 7, 2026 - Armstrong Henry H Associates Inc filed a 13F-HR form disclosing ownership of 4,450 shares of Corning Incorporated (MX:GLW) valued at $605,067 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 6, 2026 disclosing 4,450 shares of Corning Incorporated. This represents a change in shares of 0.00% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-07 2026-03-31 13F CORNING COM 219350105 4,450 0 0.00 605 55.53 0.0523
2026-01-06 2025-12-31 13F CORNING COM 219350105 4,450 0 0.00 390 6.58 0.0362
2025-10-02 2025-09-30 13F CORNING COM 219350105 4,450 0 0.00 365 55.98 0.0330
2025-07-07 2025-06-30 13F CORNING COM 219350105 4,450 0 0.00 234 15.27 0.0221
2025-04-08 2025-03-31 13F CORNING COM 219350105 4,450 0 0.00 204 -3.79 0.0197
2025-01-13 2024-12-31 13F CORNING COM 219350105 4,450 0 0.00 211 5.50 0.0211
2024-10-02 2024-09-30 13F CORNING COM 219350105 4,450 4,450 201 0.0192
2023-07-10 2023-03-31 13F/A-1 Corning Common 219350105 0 -8,450 -100.00 0 -100.00
2023-04-12 2023-03-31 13F Corning Common 219350105 0 -8,450 0 0.0000
2023-07-10 2022-12-31 13F/A-1 Corning Common 219350105 8,450 0 0.00 270 9.80 0.0335
2023-01-09 2022-12-31 13F Corning Common 219350105 8,450 0 0 0.0000
2022-10-12 2022-09-30 13F Corning Common 219350105 8,450 0 0.00 245 -7.89 0.0332
2022-07-13 2022-06-30 13F Corning Common 219350105 8,450 0 0.00 266 -14.74 0.0336
2022-04-27 2022-03-31 13F Corning Common 219350105 8,450 0 0.00 312 -0.95 0.0329
2022-01-20 2021-12-31 13F Corning Common 219350105 8,450 0 0.00 315 2.27 0.0331
2021-10-26 2021-09-30 13F Corning Common 219350105 8,450 0 0.00 308 -10.98 0.0357
2021-07-20 2021-06-30 13F Corning Common 219350105 8,450 0 0.00 346 -5.98 0.0397
2021-04-20 2021-03-31 13F Corning Common 219350105 8,450 0 0.00 368 21.05 0.0453
2021-02-01 2020-12-31 13F Corning Common 219350105 8,450 0 0.00 304 10.95 0.0400
2020-10-26 2020-09-30 13F Corning Common 219350105 8,450 0 0.00 274 25.11 0.0380
2020-07-22 2020-06-30 13F Corning Common 219350105 8,450 8,450 219 0.0328
2020-05-05 2020-03-31 13F Corning Common 219350105 0 -8,450 -100.00 0 -100.00
2020-01-29 2019-12-31 13F Corning Common 219350105 8,450 0 0.00 246 2.07 0.0354
2019-10-16 2019-09-30 13F Corning Common 219350105 8,450 0 0.00 241 -14.23 0.0395
2019-07-19 2019-06-30 13F Corning Common 219350105 8,450 0 0.00 281 0.36 0.0384
2019-04-16 2019-03-31 13F Corning Common 219350105 8,450 0 0.00 280 9.80 0.0432
2019-01-28 2018-12-31 13F Corning Common 219350105 8,450 0 0.00 255 -14.43 0.0419
2018-10-19 2018-09-30 13F Corning Common 219350105 8,450 0 0.00 298 28.45 0.0457
2018-07-25 2018-06-30 13F Corning Common 219350105 8,450 0 0.00 232 -0.85 0.0396
2018-04-30 2018-03-31 13F Corning Common 219350105 8,450 0 0.00 234 -13.33 0.0388
2018-01-23 2017-12-31 13F Corning Common 219350105 8,450 0 0.00 270 6.72 0.0455
2017-10-24 2017-09-30 13F Corning Common 219350105 8,450 0 0.00 253 -0.39 0.0455
2017-07-26 2017-06-30 13F Corning Common 219350105 8,450 0 0.00 254 11.40 0.0485
2017-04-19 2017-03-31 13F Corning Common 219350105 8,450 0 0.00 228 11.22 0.0432
2017-02-01 2016-12-31 13F Corning Common 219350105 8,450 8,450 205 0.0426
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.